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# Contributor: Jakub Jirutka <jakub@jirutka.cz>
# Maintainer: Jakub Jirutka <jakub@jirutka.cz>
# Note: This software is total mess and it seems to be nearly impossible to
# create a clean distribution package.
pkgname=emscripten
# Keep with sync with pkg emscrypten-fastcomp!
pkgver=1.37.9
pkgrel=3
pkgdesc="An LLVM-to-JavaScript Compiler"
url="https://kripken.github.io/emscripten-site/"
arch="all"
license="MIT UOI-NCSA"
depends="$pkgname-optimizer>=$pkgver emscripten-fastcomp>=$pkgver
nodejs python2 node-closurecompiler-externs"
makedepends="binaryen clang cmake"
checkdepends="closure-compiler"
subpackages="$pkgname-optimizer
$pkgname-libs-asmjs:libs_asmjs:noarch
$pkgname-libs-wasm:libs_wasm:noarch"
source="$pkgname-$pkgver.tar.gz::https://github.com/kripken/$pkgname/archive/$pkgver.tar.gz
fix-python-shebang.patch
settings_template-paths.patch
add-system-level-config.patch
move-emcc-txt.patch
binaryen-wasm-js-path.patch
closurecompiler-externs-path.patch
closurecompiler-language_in-es6.patch
embuilder-fix-task-all-for-wasm.patch
embuilder-omit-provided.patch
add-global-cache.patch
emscripten.cfg"
builddir="$srcdir/$pkgname-$pkgver"
_ports="Bullet-version_1:bullet
FreeType-version_1:freetype
libpng-version_1:libpng
Ogg-version_1:ogg
SDL2-version_13:sdl2
SDL2_image-version_3:sdl2-image
SDL2_net-version_2:sdl2-net
SDL2_ttf-version_1:sdl2-ttf
Vorbis-version_1:vorbis
zlib-version_1:zlib
"
for _port in $_ports; do
_port=${_port%:*}
source="$source $pkgname-port-$_port-zip::https://github.com/emscripten-ports/${_port%-*}/archive/${_port##*-}.zip"
done
export EM_CACHE="$srcdir/cache"
export EM_CONFIG="$srcdir/.emscripten"
export EM_PORTS="$srcdir/ports"
prepare() {
default_prepare
cd "$builddir"
# This file is read from emcc.py for --help.
cp site/build/text/docs/tools_reference/emcc.txt .
sed "s|/usr/share/emscripten|$builddir|" \
"$srcdir"/emscripten.cfg > "$EM_CONFIG"
# Symlink fetched ports to the directory where emscripten can find them.
mkdir -p "$EM_PORTS"
local port; for port in $_ports; do
ln -s "$srcdir"/$pkgname-port-${port%:*}-zip "$EM_PORTS"/${port#*:}.zip
done
# Backup and patch system_libs.py to block fetching ports from internet.
cp tools/system_libs.py tools/system_libs.py.orig
sed -Ei 's/^(\s+).*\.urlopen\(.*/\1logging.error("fetching disabled in abuild"); exit(1)/' \
tools/system_libs.py
}
build() {
cd "$builddir"/tools/optimizer
msg "Building optimizer..."
cmake \
-DCMAKE_BUILD_TYPE=Release \
-DCMAKE_INSTALL_PREFIX=/usr \
-DCMAKE_CXX_FLAGS="$CXXFLAGS" \
-DCMAKE_C_FLAGS="$CFLAGS" \
-DCMAKE_C_COMPILER=clang \
-DCMAKE_VERBOSE_MAKEFILE=ON
make
cd "$builddir"
msg "Building libraries and ports for asm.js..."
./embuilder.py build ALL
msg "Building libraries and ports for WebAssembly..."
EMCC_WASM_BACKEND=1 ./embuilder.py build ALL
}
check() {
cd "$builddir"/tests
rm -f hello_world.js*
../emcc -Os --closure 1 -o hello_world.js hello_world.c
node hello_world.js
}
package() {
local destdir="$pkgdir/usr/share/$pkgname"
local name
mkdir -p "$destdir"
cp -r "$builddir"/* "$destdir"/
cd "$destdir"
# Revert original file without connection blocking.
mv tools/system_libs.py.orig tools/system_libs.py
find . -name "*.bat" -delete
find . -name "*.pyc" -delete # these contain wrong absolute path
rm -r docs # there are only few PDFs and TeX sources
rm -r media # media for website
rm -r site # a website (?)
rm -r tests # looks more like a dump of random sources than decent tests
rm -r third_party # bundled stuff
rm -r tools/optimizer # we've already built it
rm AUTHORS LICENSE *.md *.markdown package.json
rm system/lib/build_cxx_natively.sh tools/update_libc_symbols.sh # garbage
mkdir -p "$pkgdir"/usr/bin
for name in em++ em-config emar embuilder.py emcc emcmake \
emconfigure emlink.py emmake emrun emscons
do
ln -s ../share/$pkgname/$name "$pkgdir"/usr/bin/$name
done
install -D -m 644 "$srcdir"/emscripten.cfg "$pkgdir"/etc/emscripten.cfg
mkdir cache # this directory should not exist yet!
install -m 644 "$EM_CACHE"/is_vanilla.txt cache/
}
optimizer() {
pkgdesc="Emscripten's optimizer for asm.js code"
depends=""
install -D -m 755 "$builddir"/tools/optimizer/optimizer \
"$subpkgdir"/usr/bin/emoptimizer
}
libs_asmjs() {
pkgdesc="Prebuilt libraries and ports for Emscripten - asm.js"
depends="$pkgname=$pkgver-r$pkgrel"
local destdir="$subpkgdir/usr/share/$pkgname/cache/asmjs"
mkdir -p "$destdir"
cp -r "$EM_CACHE"/asmjs/*.bc "$destdir"/
}
libs_wasm() {
pkgdesc="Prebuilt libraries and ports for Emscripten - WebAssembly"
depends="$pkgname=$pkgver-r$pkgrel"
local destdir="$subpkgdir/usr/share/$pkgname/cache/wasm"
mkdir -p "$destdir"
cp -r "$EM_CACHE"/wasm/*.bc "$destdir"/
}
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